Convertible chair



FIG. 1 is an isometric view of a convertible chair incorporating our newdesign;

FIG. 2 is a right side elevation view thereof with left side elevationview being a mirror image;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a rear elevation view thereof.

The broken line shown in the drawing is for illustrative purposes onlyand forms no part of the claimed design.

The ornamental design for a convertible chair, as shown and described.